2 files changed, 34 insertions, 0 deletions
diff --git a/opentrack/camera-names.hpp b/opentrack/camera-names.hpp
index 3d3948fa..6f82ba34 100644
--- a/opentrack/camera-names.hpp
+++ b/opentrack/camera-names.hpp
@@ -13,6 +13,7 @@
 #   include <unistd.h>
 #endif
 
+template<typename = void>
 QList<QString> get_camera_names() {
     QList<QString> ret;
 #if defined(_WIN32)
@@ -82,6 +83,7 @@ QList<QString> get_camera_names() {
     return ret;
 }
 
+template<typename = void>
 int camera_name_to_index(const QString &name)
 {
     auto list = get_camera_names();
diff --git a/opentrack/opencv-camera-dialog.hpp b/opentrack/opencv-camera-dialog.hpp
new file mode 100644
index 00000000..3b700a70
--- /dev/null
+++ b/opentrack/opencv-camera-dialog.hpp
@@ -0,0 +1,32 @@
+#pragma once
+
+#include <QMutex>
+#include <QMutexLocker>
+#include <opencv2/videoio.hpp>
+#include "opentrack/camera-names.hpp"
+
+template<typename tracker>
+class camera_dialog
+{
+    cv::VideoCapture fake_capture;
+public:
+    void open_camera_settings(cv::VideoCapture* cap, const QString& camera_name, QMutex* camera_mtx)
+    {
+        if (cap)
+        {
+            QMutexLocker l(camera_mtx);
+
+            if (cap->isOpened())
+            {
+                cap->set(cv::CAP_PROP_SETTINGS, 1);
+                return;
+            }
+        }
+
+        fake_capture = cv::VideoCapture(camera_name_to_index(camera_name));
+        fake_capture.set(cv::CAP_PROP_SETTINGS, 1);
+        // don't hog the camera capture
+        fake_capture.open("");
+    }
+};
+